Richard W. Hradek

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Davenport, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Backup breathing gas supply for an oxygen concentrator system
- Patent number 4,870,960
- Issue date Oct 3, 1989
- Litton Systems, Inc.
- Richard W. Hradek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Variable area molecular sieve container having a thermal control sy...
- Patent number 4,496,376
- Issue date Jan 29, 1985
- Litton Systems, Inc.
- Richard W. Hradek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL